Question

var API_KEY= 'XXX';
CHANNEL_ID = 'XXX';
router.get('/', function(req, res) {
request.get('https://www.googleapis.com/youtube/v3/search', { part: 'snippet', channelId: CHANNEL_ID, type: 'video', eventType: 'live', key: API_KEY }, function(data) {
    try {
        if(data['items'].length > 0) 
    res.json({status: true});
    }
      catch (err) {
          res.json({status: false});
          console.log(err)
        }
    });
});

TypeError: Cannot read property 'length' of undefined
    at Request._callback (C:\Users\Steve\Desktop\Own api check\server.js:24:21)
    at self.callback (C:\Users\Steve\Desktop\Own api     check\node_modules\request\request.js:185:22)
    at Request.emit (events.js:182:13)
    at Request.start (C:\Users\Steve\Desktop\Own api     check\node_modules\request\request.js:749:10)
    at Request.end (C:\Users\Steve\Desktop\Own api     check\node_modules\request\request.js:1506:10)
    at end (C:\Users\Steve\Desktop\Own api check\node_modules\request\request.js:560:14)
at Immediate._onImmediate (C:\Users\Steve\Desktop\Own api check\node_modules\request\request.js:574:7)
    at runCallback (timers.js:696:18)
at tryOnImmediate (timers.js:667:5)
at processImmediate (timers.js:649:5)

完整代码：

我正在尝试创建一个API，该API可以读取和写入YouTube数据在我的网站上对我来说，如果那个人在心中，总是给我这样的错误

var express = require（'express'）; var app = express（）; var bodyParser = require（'body-parser'）; var request = require（'request'）;

//Configure app to use bodyParser();
app.use(bodyParser.urlencoded({ extend: true}));
app.use(bodyParser.json());

var port = process.env.PORT || 1337;

//Routes for the API
var router = express.Router();
router.use(function(req, res, next) {
    console.log("Got Request"); // -> Something is happening
    next();
})

var API_KEY= '';
CHANNEL_ID = 'UCmDM6zuSTROOnZnjlt2RJGQ';
router.get('/', function(req, res) {
request.get('https://www.googleapis.com/youtube/v3/search', { part:         'snippet', channelId: CHANNEL_ID, type: 'video', eventType: 'live', key: API_KEY         }, function(data) {
    try {
        if(data['items'].length > 0) 
    res.json({status: true});
    }
      catch (err) {
          res.json({status: false});
          console.log(err)
    }
});
});

//Custom URL e.g. example.com:1337/api/ECHO

router.route('/:echo').get(function(req, res) {

    res.json({echo: req.params.echo});
})



//All routes will be prefixed with /api
app.use('/api', router);


//Start the server
app.listen(port);
console.log('API server has been started on port ' + port);

Answer 1

错误在此行

if(data['items'].length > 0)

数据对象没有'items'属性。对数据对象执行console.log以查看返回了什么。似乎未正确调用Youtube API，而是返回了错误。

请在您的请求中尝试以下代码：

request({url: "https://www.googleapis.com/youtube/v3/search?",
         qs:{ 
              part: 'snippet', 
              channelId: CHANNEL_ID, 
              type: 'video', 
              eventType: 'live', 
              key: API_KEY
            }
}, function(err, response, data){
    if (err){
      console.log(err);
    }

    console.log(data);
    if(data['items'].length > 0) {
        res.json({status: true});
    }
});

API错误代码Node.js

1 个答案: